interaction

American  

[in-ter-ak-shuhn] / ˌɪn tərˈæk ʃən /

noun

1. reciprocal action, effect, or influence.

2. Physics.

   1. the direct effect that one kind of particle has on another, in particular, in inducing the emission or absorption of one particle by another.

   2. the mathematical expression that specifies the nature and strength of this effect.

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interaction British  

/ ˌɪntərˈækʃən /

noun

1. a mutual or reciprocal action or influence

2. physics the transfer of energy between elementary particles, between a particle and a field, or between fields See strong interaction electromagnetic interaction fundamental interaction gravitational interaction weak interaction electroweak interaction

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Other Word Forms

• interactional adjective

Etymology

Origin of interaction

First recorded in 1825–35; inter- + action

Example Sentences

Strong interactions between the layers lead to very different transmission behaviors for left- and right-circularly polarized light under "normal incidence," or polarized light that hits perpendicular to the surface.

From Science Daily

Overall, while Proton’s support model does not include live interaction, it has a solid foundation for self-guided troubleshooting.

From Salon

For five years, he covered the biggest campaigns and detailed the changing interactions between shareholders and companies.

From The Wall Street Journal

The American Academy of Pediatrics recommends families prioritize non-digital activities like play and social interaction for children 5 and under.

From Los Angeles Times

Though the fight never happened, the interaction went viral and Mullin repeatedly stood by his behaviour.

From BBC

Related Words

• communication
• cooperation
• synergy